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Package java. nio. file. attribute
See: Description
-
Interface Summary Interface Description AclFileAttributeView A file attribute view that supports reading or updating a file's Access Control Lists (ACL) or file owner attributes.AttributeView An object that provides a read-only or updatable view of non-opaque values associated with an object in a filesystem.BasicFileAttributes Basic attributes associated with a file in a file system.BasicFileAttributeView A file attribute view that provides a view of a basic set of file attributes common to many file systems.DosFileAttributes File attributes associated with a file in a file system that supports legacy "DOS" attributes.DosFileAttributeView A file attribute view that provides a view of the legacy "DOS" file attributes.FileAttribute<T> An object that encapsulates the value of a file attribute that can be set atomically when creating a new file or directory by invoking thecreateFileorcreateDirectorymethods.FileAttributeView An attribute view that is a read-only or updatable view of non-opaque values associated with a file in a filesystem.FileOwnerAttributeView A file attribute view that supports reading or updating the owner of a file.FileStoreAttributeView An attribute view that is a read-only or updatable view of the attributes of aFileStore.GroupPrincipal AUserPrincipalrepresenting a group identity, used to determine access rights to objects in a file system.PosixFileAttributes File attributes associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards.PosixFileAttributeView A file attribute view that provides a view of the file attributes commonly associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards.UserDefinedFileAttributeView A file attribute view that provides a view of a file's user-defined attributes, sometimes known as extended attributes.UserPrincipal APrincipalrepresenting an identity used to determine access rights to objects in a file system. -
Class Summary Class Description AclEntry An entry in an access control list (ACL).AclEntry.Builder A builder ofAclEntryobjects.FileTime Represents the value of a file's time stamp attribute.PosixFilePermissions This class consists exclusively of static methods that operate on sets ofPosixFilePermissionobjects.UserPrincipalLookupService An object to lookup user and group principals by name. -
Enum Summary Enum Description AclEntryFlag Defines the flags for used by the flags component of an ACLentry.AclEntryPermission Defines the permissions for use with the permissions component of an ACLentry.AclEntryType A typesafe enumeration of the access control entry types.PosixFilePermission Defines the bits for use with thepermissionsattribute. -
Exception Summary Exception Description UserPrincipalNotFoundException Checked exception thrown when a lookup ofUserPrincipalfails because the principal does not exist.
Package java.nio.file.attribute Description
Attribute views
Description
AttributeViewCan read or update non-opaque values associated with objects in a file system FileAttributeViewCan read or update file attributes BasicFileAttributeViewCan read or update a basic set of file attributes PosixFileAttributeViewCan read or update POSIX defined file attributes DosFileAttributeViewCan read or update FAT file attributes FileOwnerAttributeViewCan read or update the owner of a file AclFileAttributeViewCan read or update Access Control Lists UserDefinedFileAttributeViewCan read or update user-defined file attributes FileStoreAttributeViewCan read or update file system attributes
An attribute view provides a read-only or updatable view of the non-opaque
values, or metadata, associated with objects in a file system.
The FileAttributeView interface is
extended by several other interfaces that that views to specific sets of file
attributes. FileAttributeViews are selected by invoking the Files.getFileAttributeView(java.nio.file.Path, java.lang.Class<V>, java.nio.file.LinkOption...) method with a
type-token to identify the required view. Views can also be identified
by name. The FileStoreAttributeView interface
provides access to file store attributes. A FileStoreAttributeView of
a given type is obtained by invoking the FileStore.getFileStoreAttributeView(java.lang.Class<V>) method.
The BasicFileAttributeView
class defines methods to read and update a basic set of file
attributes that are common to many file systems.
The PosixFileAttributeView
interface extends BasicFileAttributeView by defining methods
to access the file attributes commonly used by file systems and operating systems
that implement the Portable Operating System Interface (POSIX) family of
standards.
The DosFileAttributeView
class extends BasicFileAttributeView by defining methods to
access the legacy "DOS" file attributes supported on file systems such as File
Allocation Tabl (FAT), commonly used in consumer devices.
The AclFileAttributeView
class defines methods to read and write the Access Control List (ACL)
file attribute. The ACL model used by this file attribute view is based
on the model defined by
RFC 3530: Network File System (NFS) version 4 Protocol.
In addition to attribute views, this package also defines classes and interfaces that are used when accessing attributes:
- The
UserPrincipalandGroupPrincipalinterfaces represent an identity or group identity. - The
UserPrincipalLookupServiceinterface defines methods to lookup user or group principals. - The
FileAttributeinterface represents the value of an attribute for cases where the attribute value is required to be set atomically when creating an object in the file system.
Unless otherwise noted, passing a null argument to a constructor
or method in any class or interface in this package will cause a NullPointerException to be thrown.
- Since:
- 1.7
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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
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